(19)

(11)

EP 2 459 871 A2

(12)

(88) Date of publication A3: 07.04.2011 (43) Date of publication: 06.06.2012 Bulletin 2012/23 (21) Application number: 10754561.8 (22) Date of filing: 30.07.2010

(51) International Patent Classification (IPC):  F03D 3/00(2006.01) F03D 3/06(2006.01) F03D 3/04(2006.01) (86) International application number: PCT/IB2010/053481 (87) International publication number: WO 2011/013105 (03.02.2011 Gazette 2011/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR Designated Extension States: BA ME RS (30) Priority: 31.07.2009 IT PI20090096 (71) Applicants: Chiarelli, Mario Rosario 56019 Vecchiano (PI) (IT) Massai, Andrea 52027 San Giovanni Valdarno (AR) (IT) Bolognesi, Paolo 56121 Pisa (PI) (IT) Russo, Giovanni 56121 Ospedaletto - Pisa (PI) (IT) Atzeni, Davide 16036 Recco (GE) (IT)

(72) Inventor: CHIARELLI, Mario Rosario 56019 Vecchiano (PI) (IT) (74) Representative: Turini, Laura  Studio Brevetti Turini .sr.l. Via Lamarmora, 55 50121 Firenze 50121 Firenze (IT)